S-Carboxymethyl-L-Cysteine

S-Carboxymethyl-L-Cysteine( Carbocysteine)(S-CMC)

CAS:638-23-3;186537-58-6 

EINECS:211-327-5 

Molecular formula:C5H9NO4S 

Molecular weight:179.194

Assay:98.5-101.0% 

Appearance: White crystals or crystalline powder

Packaging:25kg/drum

Product COA

Product:  S-Carboxymethyl-L-Cysteine             CAS No:(638-23-3)                                      

Item Specification(AJI92) Result

Specific rotation[a]D20 -33.5° TO -36.5° -33.9°

State of solution ( Transmittance) Clear and colorless≥98% 99.3%

Chloride(Cl) ≤ 0.04% 0.038%

Sulfate (SO4) ≤ 0.020% ≤ 0.02%

Iron(Fe) ≤ 10ppm ≤ 3ppm

Heavy metals(Pb) ≤ 10ppm ≤ 5ppm

Arsenic(as As2o3) ≤ 1ppm ≤ 1ppm

other amino acids Chromatographically Conforms

Loss on drying ≤ 0.5% 0.2%

Residue on ignition(sulfated) ≤ 0.1% 0.05%

Assay 98.5% to 101.0% 99.7%

PH 2.0 to 3.5 2.8